Description Of Parameters; Basic Parameters - Vacon NX ACTIVE FRONT END II Applications Manual

40 • Vacon
7.

DESCRIPTION OF PARAMETERS

7.1

Basic parameters

2.1.1 Grid Nominal Voltage
This parameter sets the incoming line voltage for the regenerative drive. The maximum
value is 690 V, Set this parameter to the nominal line voltage at the installation site.
2.1.2 Grid Nominal Frequency
Grid Nominal frequency. Used for frequency protection functions and initial guess for
synchronization frequency.
2.1.3 System Rated Current
Rated current capacity of the supply or the transformer. May need to be set if AFE is
oversized compared to LCL or feeding transformer capacity. For testing purposes, the
feeding transformer should not be less than 20% of the unit nominal current or following
breakers or fuses. Recommended not to increase System Rated Current above I
Current.
2.1.4 System Rated Power
Set here the rated active power of the system.
2.1.5 Parallel AFE
0 = Single AFE
1 = Parallel AFE
When selecting parallel, AFE DC Drooping is set to 4,00 %, Software Modulation 1 is
activated (Default Software Modulator 2) and modulation is automatically synchronized
between AFE units in common DC bus.
2 = Master
When selecting Master, AFE DC Drooping is set to 4,00 %, Software Modulation 1 is
activated (Default Software Modulator 2) and modulation is automatically synchronized
between AFE units in common DC bus. Start Command is send trough system bus to
follower drives
3 = Follower
When selecting follower, AFE DC Drooping is set to 4,00 %, Software Modulation 1 is
activated (Default Software Modulator 2) and modulation is automatically synchronized
between AFE units in common DC bus. Follower drive revives start command from
master drive through system bus.
[# V] ID110
[#,## Hz] ID1532
[A]
[kW] ID116
ID1501
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
arfiff05 Standard AFE-II
ID113
H